Charging-hole-cover lifting-device for coke oven batteries



y 11, 1955 G. BRANDENBUSCH 3,182,838

CHARGING-HOLE-COVER LIFTING-DEVICE FOR COKE OVEN BATTERIES Filed Aug. 12, 1963 FIG. .5

FIG. I 8 BY ydttomgz charging car.

United States Patent lice 3,182,838 CHARGING-HOLE-COVER 'LIFTlNG-DEVICE FOR COKE OVEN BATTERIES Giinter Brandenbusch, Essen-Steele, Germany, assiguor, by mesue assignments, to Koppers Company, Inc., Pittsburgh, Pa., a corporation of Delaware Filed Aug. 12, 1963, Ser. No. 301,245 7 4 Claims. (Cl. 214658) The invention relates to an electromagnetic charginghole-cover lifting-device for coke oven batteries with a telescopically constructed lifting rod and a drive means capable of turning the cover in the frame of the charging hole.

The metallic charging-hole covers of coke oven batteries have a convex surface and are located in conical charging-hole frames with which they form a direct seal.

This seal may be additionally supported by introduction of a sealing medium, such as powdered coal or coke, in a free annular space between the cover and frame above the metallic seal. The cover is turned once upon'replacing it in the vicinity of the metallic sealing surface to eliminate the deposits which are formed by the sealing medium and by formation of condensate fromthe distillation gases ofithe oven chamber. 7

It is now necessary to insert the cover concentrically and to turn it for production of a satisfactory seal. An accurate concentric placing of electromagnets on the covers is not always immediately possible with the previously known electromagnetic cover lifting device. In the case ,of off-center seating anleccentric motionyof the cover occurs, resulting in damage to the sealing surfaces and the frame in the. masonry is loosened under certain circumstances.

This invention comprises connecting the lower end of the lifting rod to a lifting magnet by means of centering 3,182,838 Patented May 11,

pins having a cross-sectionprojecting through centering openings having a larger cross-section, "for example a plate fastened on the lifting rod; arranging the centering pins on the lifting magnet; and adjusting them in the position effecting a concentric turning of the charging-hole cover.

An inclined position of the charging hole cover is prevented in each case by means of such a centering device because the centering pins provided with rollers are preferably moved along the wall of the centering openings possible has to be surmounted for the movement of the centering pins to the centering position.

Another feature of the invention is that the lifting rods are'turned by a common drive means arranged on the section that is not capable of being raised is provided with slip rings to which the cables from the lifting magnet are connected; In this way, it'is possible to place the cables inside the telescopic pipe so that they are protected from damage. I

" The invention is illustrated by wayof example in the drawings.

FIGURE 1 is a vertical section through one of thelifting devices for a charging hole cover.

FIGURE 2 is a section along line II- II of FIG. 1,

and r a FIG. 3 is a sectional view along line III-III of FIG. 1. Charging holes 2 are arranged in the oven deck 1 of the oven battery for charging coal into the oven chambers; the charging holes are located behind one another in the are providedat the top with conical, metallic charginghole frarnesi 3, in which metallic charging-hole covers 4 .are inserted. f

The lifting of the charging-hole covers 4 is effected by means of electro lifting magnet- 5. The electric lifting magnet 5 is provided with a supporting ring 6. A supporting plate 7 which is provided with rollers 9 supported by centering pins 8 is firmly fastened to the upper end of the supporting ring 6.

Thesupportingplate 7 rests on balls 10 which are mounted on a supporting plate 11 which is firmly connected with lifting rod 12 by a concentric ring 13 and a plate 14. i

Furthermore, a centering plate 15 which is provided with centering openings '17 concentrically arranged around the vertical axis is mounted on connecting ring 13.

Terminal switches 18 are connected with the lifting magnet and give a signal by contacts (not illustrated) when the lifting magnet is placed on the charging hole cover 4. Cable 19 is connected to lifting magnet 5 and terminal switches 18. The cable passes through the lifting rod 12 consisting of a pipe.

The lifting rod 12 is constructed telescopically and a lower pipe 12a can be moved inside an upper pipe 12b.

Bothv pipe sections are designed so that they do not turn in relation to on'e'another, for example by use of akey and keyway 20 or many-sided cross-sectional forms.

The lower telescopic pipe 12a is raised and lowered by means of a lever'21 preferably a common lever for the lifting rods of allcharging hole covers, with interposition of a shaft 22. The one end of lever 21 engages in a bushing 23 firmly connected with the lower telescopic pipe 12a and is moved vertically by means of an electro control means or a piston motor 24. The lower telescopic pipe 12a is guided in bearings 25 and is capable of beingmovecl inside the upper telescopic pipe 12b.

The telescopic pipe 12b is'firmly connected with a stub shaft 27 which is rotatably mounted in abearing 28. Stub shaft 27 is driven by means of a bevel gear 29 and a shaft 30 which is common for all drives of the individual lifting rods 12. The cable 19 of the lifting magnet 5 and terminal switch 18 are connected with slip rings 31 which are separately arranged around the upper telescopic pipe 12b and to which current is supplied through 7 lines 32.

'cover 4 is turned, for example in the direction of arrow 34 in FIGURE 2, upon lifting or in any case upon inserting, the centeringpins 8 together with their rollers 9 arrive at the edges of the centering openings 17 as indicated in dotted lines, whereby the cover 4 is induced with lifting magnet 5 to make an eccentric motion upon turning the lifting rod. As soon as the cover 4 enters the area of the charging hole frame 3, the rollers 9 will be forced, by movement along the walls of the centering openings 17, to produce a concentric rotation of the cover 4 by means of the eccentric lifting magnet which rests on the cover 4. That is to say, when the cover 4, which is eccentric with respect to the magnet 5, is started into the charging hole frame 3,,the group of elements including the cover, the magnet 5, the supporting rings 6, and the supporting plate 7, is movable on the ball rollers 10 to eifect a centering of the cover 4 in the charging hole frame 3, under the action of the rollers 9 working against the walls of the centering openings 17,

Jfi

I claim: V d 1. Apparatus for handling coke oven charging hole vers comprising: 7 V

(a) a support memiber which is rotatable about an axis;

(b) spaced apart first andsecond planar members fixed transversely across said support member with said 7 second planar memberhaving therein anlaxial aperture comprised of a plurality of lobate-centering openings arrangedconcentrically around and communicating with acentral opening;

() a plurality of bearings mountedon said first planar member; s

(d) afmagnet for lifiting and handling said cover;

(e) a third planar member fixed to said magnet and disposed intermediate said firstand second planar members and movably supported on said bearings; and V (f) a plurality of guide roller members mounted on said third planar member, each roller member operating in its'respective lobate centering opening, said lobate centering openings having a cross section area greater than the cross sectional area of said roller members, whereby when said cover is rotated about its axis said roller members engage the wall of their concentrically around and communicating with a cen "tral opening; l V K V (c) a'plurality of "bearings mounted on said first planar member; v

(d) a magnet for lifiting and handling saidcover;

(e), athird planar. member fixed to said magnet and disposed intermediate said first and second planar members and movably supported on said bearings;

(f) lmeans tolreciprocate; said rods; 7

(3) means to rotate said rods about said axis; and

t l 4. g

(h) apl urallity of guide roller members mounted on said third planar member, each roller member operating in its respective lobate centering opening, said lobate centering openings having a cross section area greater than the cross sectional area of said roller members, whereby when said cover is rotated about its axis said roller members engage the wall of their respective lobate centering opening and move in a generally circular path and said cover is centered with respect to said charging hole.

3. The invention set forth in claim 2 wherein:

(a) means is provided to energize and deenergize said magnet.

4. Apparatus for handling coke oven charging hole covers comprising: l y

(a) longitudinally telescopable rods which are inter- --engagealble for simultaneous rotation about a common axis;

(b) spaced apartlfirst and second planar members fixed transversely across said rods with said second planar member having therein .a plurality of circular centering openings arranged concentrically around a point in said second planar member;

(c) a magnet for handling said cover; v

I (d) a third planarrnember fixed tosaid magnet;

(e) means for movably supporting. said third planar member intermediate said first and second planar members; 7. V m

(f) means to reciprocate said rods; l

(g) means to rotate said rods about said axis; an

(h) aplurality of guide roller members mounted on said third planar member and operating in respect-ive circular centering openings having a cross sectional'area greater than the cross sectional area of said roller members whe-reby'when said rods are rotated about said axis said roller members engage the wall v of their respective centering opening and move in a generally circular path, and said cover is centered with respect to said charging hole.

References Cited by the Examiner UNITED STATES] PATENTS 1,609,919 12/26 Underwood. 3,119,505

1/64 le-tersen a al. v 214-658 HUGO o. SCHULZ'; PrimaryEiramin er, 

1. APPARATUS FOR HANLDING COKE OVER CHARGING HOLE COVERS COMPRISING: (A) A SUPPORT MEMBER WHICH IS ROTATABLE ABOUT AN AXIS; (B) SPACED APART FIRST AND SECOND PLANAR MEMBERS FIXED TRANSVERSELY ACROSS SAID SUPPORT MEMBER WITH SAID SECOND PLANAR MEMBER HAVING THEREIN AN AXIAL APERTURE COMPRISED OF A PLURALITY OF LOBATE-CENTERING OPENINGS ARRANGED CONCENTRICALLY AROUND AND COMMUNICATING WITH A CENTRAL OPENING; (C) A PLURALITY OF BEARINGS MOUNTED ON SAID FIRST PLANAR MEMBER; ND) A MAGNET FOR LIFTING AND HANDLING SAID COVER; (E) A THIRD PLANAR MEMBER FIXED TO SAID MAGNET AND DISPOSED INTERMEDIATE AND FIRST AND SECOND PLANER MEMBERS AND MOVABLY SUPPORTED ON SAID BEARINGS; AND (F) A PLURALITY OF GUIDE ROLLER MEMBERS MOUNTED ON SAID THIRD PLANER MEMBER, EACH ROLLER MEMBER OPERATING IN ITS RESPECTIVE LOBATE CENTERING OPENING, SAID LOBATE CENTERING OPENING HAVING A CROSS SECTION AREA GREATER THAN THE CROSS SECTIONAL AREA OF SAID ROLLER MEMBERS, WHEREBY WHEN SAID COVER IS ROTATED ABOUT ITS AXIS SAID ROLLER MEMBERS ENGAGE THE WALL OF THEIR RESPECTIVE LOBATE CENTERING OPENING AND MOVE IN A GENERALLY CIRCULAR PATH AND SAID COVER IS CENTERED WITH RESPECT TO SAID CHARGING HOLE. 